A researcher conducts a quasi-experimental study to determine whether there is improved weight gain among premature infants who are fed according to cue-based protocols.
The researcher trained neonatal intensive care nurses to apply cue-based feeding to orally fed infants and notes a statistical difference in weight gain between infants fed according to cue-based protocols and those fed according to standard protocols. Which might be a threat to internal validity in this study?
a. The concept of cue-based feeding is not well defined.
b. The study sample is homogeneous.
c. Some infants developed gastroenteritis.
d. Not all nurses received cue-based protocol education.
Question 2
A researcher conducts a quasi-experimental study to determine whether there is appropriate weight gain among premature infants who are fed according to cue-based protocols.
The researcher trained neonatal intensive care nurses to apply cue-based feeding to orally fed infants and notes a statistical difference in weight gain between infants fed according to cue-based protocols and those fed according to standard protocols. The reviewer critiquing the study notes that not all nurses completed the cue-based feeding module. This would affect which type of validity?
a. Construct validity
b. External validity
c. Internal validity
d. Statistical conclusion validity
Tips for improved communication
Results of the study by Laruelle et al. (1996)
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